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Analysis

  • max time kernel
    120s
  • max time network
    16s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    21/09/2024, 01:15

General

  • Target

    3838f56feb6c0017af4bab738549977d6e38082653a7c0c0c272fb5e9dbca818N.exe

  • Size

    53KB

  • MD5

    31b09709f9e97ee930c7ea3dbf627950

  • SHA1

    2db47e622cf4bfc352e36fd7e794e6160e864a48

  • SHA256

    3838f56feb6c0017af4bab738549977d6e38082653a7c0c0c272fb5e9dbca818

  • SHA512

    c451bdceab3c87b190c4899f6646a1d4805643c636b4b9b745b68c952704de1bcedd5540ce7dcc564217675ac6a7f3d78ca6f6e3ec5d2888a92cde6ae8afff62

  • SSDEEP

    1536:vNbg8r8QUxWsqpuV7Kp3StjEMjmLM3ztDJWZsXy4JzxPME:aWTQJJjmLM3zRJWZsXy4Jt

Malware Config

Signatures

  • Modifies visiblity of hidden/system files in Explorer 2 TTPs 1 IoCs
  • Executes dropped EXE 1 IoCs
  • Loads dropped DLL 2 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • System Location Discovery: System Language Discovery 1 TTPs 2 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\3838f56feb6c0017af4bab738549977d6e38082653a7c0c0c272fb5e9dbca818N.exe
    "C:\Users\Admin\AppData\Local\Temp\3838f56feb6c0017af4bab738549977d6e38082653a7c0c0c272fb5e9dbca818N.exe"
    1⤵
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:2308
    • C:\Users\Admin\riuyoh.exe
      "C:\Users\Admin\riuyoh.exe"
      2⤵
      • Modifies visiblity of hidden/system files in Explorer
      • Executes dropped EXE
      • Adds Run key to start application
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:2456

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • \Users\Admin\riuyoh.exe

    Filesize

    53KB

    MD5

    1f2310d5a21a2f5e5855dbceb09ad4cc

    SHA1

    6abe5b4c7381bb89e6d1c60865269899f694c2db

    SHA256

    da394760a58a9a3f7e2f27cd1a671c722a07841074324ceddd3d64b0eec3f732

    SHA512

    8c6644bae0121dbda9d61ad5ae8f2d9c8cface769523021b338e5215efd39ce935c3a3c5256999671c1d6383efdcc8be08c1aef89a04ae55f1e4706bf4d22895

  • memory/2308-0-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2308-8-0x0000000003810000-0x0000000003822000-memory.dmp

    Filesize

    72KB

  • memory/2308-19-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2308-20-0x0000000003810000-0x0000000003822000-memory.dmp

    Filesize

    72KB

  • memory/2456-15-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB

  • memory/2456-21-0x0000000000400000-0x0000000000412000-memory.dmp

    Filesize

    72KB